@article{GDZPPN001178814, title = {Singularly Perturbed Finite Element Methods.}, journal = {Numerische Mathematik}, volume = {44}, year = {1984}, pages = {425-434}, zbl = {0569.65065}, url = {http://dml.mathdoc.fr/item/GDZPPN001178814} }
O'Riordan, Eugene. Singularly Perturbed Finite Element Methods.. Numerische Mathematik, Tome 44 (1984) pp. 425-434. http://gdmltest.u-ga.fr/item/GDZPPN001178814/